mirror of
https://github.com/linux-apfs/apfstests.git
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Dave Chinner
cf89aed924
Fully scripted conversion, see script in initial SPDX license commit message. Signed-off-by: Dave Chinner <dchinner@redhat.com>
76 lines
1.7 KiB
Bash
Executable File
76 lines
1.7 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2017 Red Hat Inc. All Rights Reserved.
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#
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# FS QA Test No. 451
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#
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# Test data integrity when mixing buffered reads and asynchronous
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# direct writes a file.
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#
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -f $tmp.*
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}
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# get standard environment, filters and checks
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. ./common/rc
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# remove previous $seqres.full before test
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rm -f $seqres.full
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# real QA test starts here
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_supported_fs generic
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_supported_os Linux
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_require_test
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_require_test_program "feature"
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_require_aiodio aio-dio-cycle-write
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_require_command "$TIMEOUT_PROG" timeout
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TESTFILE=$TEST_DIR/tst-aio-dio-cycle-write.$seq
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FSIZE=655360 # bytes
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# More read processes can help to reproduce the bug easier, so run
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# 2 ~ 20 readers according to the number of CPUs
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nr_cpu=`$here/src/feature -o`
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loops=$((nr_cpu / 2))
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if [ $loops -lt 2 ]; then
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loops=2
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elif [ $loops -gt 20 ]; then
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loops=20
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fi
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keep_reading=$tmp.reading
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touch $keep_reading
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# buffered reads the file frequently
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for ((i=0; i<loops; i++)); do
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while [ -e $keep_reading ]; do
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$XFS_IO_PROG -f -c "pread 0 $FSIZE" $TESTFILE >/dev/null 2>&1
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done &
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reader_pid="$reader_pid $!"
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done
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# start an aio writer, which does writing loops internally and check
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# data integrality.
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# For reproduce the original bug, keep testing about 30s will be better,
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# So let the AIO_TEST run as many loops as it can, then kill it in 30s.
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$TIMEOUT_PROG -s TERM 30s $AIO_TEST -c 999999 -b $FSIZE $TESTFILE >/dev/null
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# Remove $keep_reading file to stop the reader cycle
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rm -f $keep_reading
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wait $reader_pid
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echo "Silence is golden"
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status=0
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exit
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